SAN FRANCISCO — The FBI and U.S. Marshals are seeking the public’s help in locating a violent sexual predator and fugitive from Montana who was seen in San Francisco, Berkeley and Oakland last week.

Kevin Anthony Briggs, a 28-year-old convicted felon and registered sex offender, is wanted for his alleged involvement in assaults on a woman and on a police officer in Bozeman, Mont., where he escaped from custody three weeks ago.

Authorities did not say exactly where he was seen in the Bay Area. He may be traveling to Oregon, Washington or Mexico, staying in homeless shelters and attempting to earn money to travel, authorities said. He should be considered armed and dangerous.

On the morning of Feb. 1, a woman called the Bozeman Police Department to report an assault, and said that her attacker had attempted to strangle her before he left. When police located Briggs, he allegedly resisted arrest and hit an officer in the face, authorities said. He was arrested but escaped custody.

That night, he bought a one-way bus ticket to Spokane and has not been seen since. He has a warrant for his arrest for aggravated assault, attempted sexual intercourse without consent, assault on a peace officer, and escape, authorities said. Briggs is on probation for 2004 convictions for sexual intercourse without consent, aggravated kidnapping, escape, and burglary in Montana.

Briggs uses many other names, including Aimee MacIntire, Kevin Bacon, Kevin Briggs, Kevin A. Briggs, Timothy McCoy, James Meismer, James Zenon Meismer, and is known to try to alter his appearance by growing his hair long.

He has sunburst tattoo around his right nipple, a tattoo in his armpit, and a tattoo on his lower lip. He has a double “snake bite” piercing on his bottom lip. He also has a bellybutton piercing and pierced ears. He is a white man between 5 foot 5 and 5 foot 7 about 120 to 150 pounds with brown hair and hazel eyes.

Anyone with information regarding the whereabouts of Briggs should call the FBI 24 hours a day at 415-553-7400. All calls are confidential. Tips can also be submitted at: tips.fbi.gov.

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